Paper drying and finishing machine.



G. H. CASE. PAPER DRYING AND FINISHING MACHINE.

APPLICATION FILED NOV. 15, 191 I. Llfifi gww, Patented Dec. 7, 1915.

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PAPER DRYING AND FIN| SH|NG MACHINE.

APPLICATION FILED NOV.15. I911. LWQQ'W, Patented Dec. 7, 1915.

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CHARLE$ H CASE, OF ONECO, CONNECTICUT.

PAPER DRYING AND FINISHING MACHINE.

1 11452 97? Specification of Letters Patent. Pa flggntngdl 111mg "3 1915.

Application filed November 15, 1911. Serial No. 660,430.

To all whom it may concern Be it known that I, CHARLES H. CAsE, a citizen of the United States, and resident of Oneco, in the county of Windham and State of Connecticut, have invented certain new and useful Improvements in Paper Drying and Finishing Machines, of which the following is a specification.

This invention relates to paper drying and finishing machines, and has for its object to provide simple and efiiective means whereby paper may be carried over a large area of heated surface and that a corresponding area of the paper while passing over such surface be rigidly pressed thereonto so that positive contact of the paper with the whole heated area may be made continuously, thus assuring even drying of the paper.

A further object of the invention is to provide means whereby the extent of pressure of the pressing rolls may be regulated and adjusted so that when paper is passed to the heated drum these rollers may be set so as to have an ironing and stretching effect upon the surface of the paper whereby sheets that are of uneven thickness or that have been stretched out of shape during the earlier processes of finishing may be equalized and-made perfect in shape and possess the desired finished surface.

A still further object of the invention is to provide simple and effective means whereby coloring matter or other material may be readily applied to the surface of the paper while passing through the machine.

With these and other objects in View, the

' invention consEts of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

Of the accompanying drawings: Figure 1 is a side elevation of my improved machine. Fig. 2 is an end elevation showing the driving mechanism. Fig. 3 1s a central transverse sectional view through the machine. Fig. t is a modification showing a combination of rolls and blanket or endless belt for carrying the paper around the drum. Fig. 5 is a sectional side elevation illustrating one form of adjustable tension roll bearing. Fig. 6 is a top view of the bearing showing means for binding the adjusting screw. Fig. 7 is a diagrammatic view illustrating a con-- tinuous strip of paper, fed to and being carried around a plurality of heated drums, and pressed to the surface of each of said drums by means of my pressing rolls.

Referring to the drawings 1010 designate the end frames of the machine carrying bearing rings or members 1ll1 on which are supported the roll bearings 12 hereinafter more fully described. These frames are also provided with central drum bearings 23 in which the steam-tight drum 24 is journaled at one end on its shaft 25 and its opposite end on a hollow shaft or trunnion 26. This drum may be heated by any suitable means, but the same is preferably heated by steam which is admitted through the pipe 27 passing through the fixed elbow 28 and through the hollow rotatable shaft 26 into the drum, the water of condensation being removed from the drum through the pipe 29, one end of which pipe is turned downwardly within the drum to receive the water from the bottom thereof and conduct it out through the central tubular shaft into the waste, not shown.

A series of rolls are set at close intervals around the drum, said rolls being provided at their ends with outwardly extending bearing shafts 31 which shafts are journaled in the roll bearing members 12 and are held under tension against the drum surface of the paper that surrounds the drum by means of springs 18 in said bearing. These bearings themselves may be of any suitable construction such as those illustrated in Figs. 5 and 6, each being made in the form of a socket having a base 13 which may be bolted or otherwise secured to the, ring 11. The center portion of the socket is shown as being hollow as at 14t and is provided at its lower end with a transverse aperture 15 through which the hearing shaft 16 of the roll extends. Above this shaft isthe adjustable bearing block 17 against which the spring 18 presses, said blockbeing itself adjustably held under pressure through the springs 18 by means of the screw plug 19 which is threaded into the upper end of the sockets In order to bind and hold this screw plug in the desired position, the socket; is split as at 20 and a bindingscrew 21 is carried through the cars 22 whereby when said screw is set; the socket 1S contracted around the screw,

tion from the driving pulley 32, through the jack shaft 33, worm 34: and worm gear 35, which latter is connected direct to the hollow shaft 26. A clutch as at 36 may be employed, if desired, whereby the machine may be started and stopped at the will of the operator.

The operation of my improved paper finishing and drying machine may be more fully described as follows: This machine is more particularly adapted to operate upon thick paper such as card board, or the like, and when the same is applied to the machine in sheet form, a table 37 may be provided on the top of the machine on which the stock to be fed may be laid. The sheets may be taken by the (operator, one at a time, and laid against the top face of the guide plate 38, its lower edge engaging the rotating drum. The sheet is then carried forward beneath the presser rollswhich are set at close intervals around the drum, holding the surface of the paper sheet hard against the surface of the drum causing said sheet to be acted upon and receive the full effect and benefit of the heat in the drum and while so heated to be pressed hard against its surface and ironed or rolled by thepresser rolls during practically the entire revolution of the drum. In some cases when the sheet passes around the drum once theoperatio'n is completed and the edge of the sheet strikes the stripper plate 39 and is thereby lifted from the surface of the drum and carried up and over against the under surface of said plate and backward to fall by its own weight onto the table 40 from where it is removed after a suflicient quantity has accumulated. In other cases the stripper may be temporarily removed to permit the paper to be carried around the drum as many times as necessary to dry the same and produce the desired effect upon its surface.

,The old method of drying paper is to appfly the same to the surface of a heated cylinder by means of a blanket or flexible feeding belt. By this method the heat of the cylinder which causessteam to be generated beneath the surface of the paper raises the same in spots, causing bubbles or hollow places which do not come in direct contact with the heated surface. These raised portions of course couldnot dry as fast as that which remained in contact with the cylinder and therefore the sheet dries unevenly causing the same to become much wrinkled and distorted in shape. By this method the paper had to be run until the whole was thoroughly dried, after which it must be again dampened before it could be further finished similar to the treatment of clothes after Washing and before ironing.

By the use of my improved machine I feed the paper to the drum and hold the whole surface of the samefirmly in positive contact, the heated surface thereby pressing down and ironing out any steam bubbles that might have a tendency to form, thus causing the paper to dry smoothly and evenly and with perfect uniformity whereby I am enabled tostop the drying process at exactly the required point, leaving the proper amount of moisture in the paper which is required for the further-finishing. In other words, by the old process the moisture had to be entirely dried out because it dried unevenly, while by my. improved method of pressing the paper tightly to the drum the drying is absolutely uniform throughout the entire surface and can be carried to any degree of dryness desired. That is, in one case it had to be dried more than was necessary and then dampened, While in the other case it is carried to exactly the right degree of dampness, thereby saving the extra time and expense of extra drying or drying the paper to an unnecessary degree, and also the expense of dampening the same again.

On the whole by my improved process, paper can be dried to the required point in practically one-third the time of that required by the old method.

In operating on some qualities of work it is found desirable under some circumstances to employ a combination of blanket. 44 and presser rolls 30, such as that illustrated in Fig. 4, for feeding and carrying the paper around the roll, in which case the blanket or belt would do the feeding and the rolls the pressing.

I have described the machine as operating on paper in sheet form but the same is equally well adapted to act upon paper in a continuous strip, in which case the dotdash line 41, in Fig. 3, indicates the continuous strip which is fed over the roll 42, the same passing around the heated drum beneath the presser rolls and may be led off over the guide roll 43 to a suitable reel or to another machine, if desired, to be further acted upon. In most cases, however, when the paper is fed to the machine in a continuous strip it is found necessary to run the same over a plurality of drums 48, 49 and 50, as illustrated in Fig. 7, in order to produce the desired results upon the same.

My invention further consists in the provision of a trough, or other suitable receptacle placed beneath the drum, the same to contain coloring or other matter. In this receptacle is mounted a roll 45 adapted to engage one of the presser rolls 47 whereby the liquid in the receptacle may be applied to the outer surface of the paper as it passes over the heated drum. If desired to apply more material to the opposite side of the paper the surface of the paper could be reversed and run again through the same or a similar machine.

I do not wish to limit my machine to that of performing the drying process alone, as the presser rolls may be so tensioned as to act upon the surface of paper Wh1ch has been unevenly formed by a previous process,

and stretch the same rendering it of uniform thickness throughout its area, said presser rolls acting in conjunction with the heated surface of the drum and also adapted to produce an ironing effect upon the surface of the paper giving to it the desired finish. Neither do I desire to limit the use of my machine to operating on paper alone, as the same is equally Welladapted to operate on board in either sheets or strip form made of leather stock, asbestos, or any other suitable material.

I claim:

1. A paper drying and finishing machine comprising end frames, bearing rings secured to said end frames, a drum rotatably supported by said end frames independentlyv of said bearing rings, means for heating the drum, bearing members secured to said rings, and pressing rollers cooperating With said drum and having their ends yieldingly sup ported by said members.

2. A paper drying and finishing machine comprising end frames, bearing rings having flanges secured to said end frames, a drum rotatably supported by said end frames independently of said bearing rings, means for heating the drum, and bearing members rigidly secured to said rings and provided with means for yieldingly supporting said rolls in contact with said drum.

3. A paper drying and finishing machine comprising end frames, bearing rings sestripper tongue at the rear end of its rear face.

4:. A paper drying and finishing machine comprising end frames, bearing rings secured to said end frames, bearing members secured to said rings, a drum rotatably supported by said end frames independently of said bearing rings, means for heating the drum, a cdnveying belt for first acting upon the paper to pass it to the drum, a series of pressing rollers for subsequently acting upon the paper, the ends of said rollers being supported by said members, a guide plate carried by said frame, said guide plate having a stripper tongue at the rear end of its rear face.

5. A paper drying and finishing machine comprising end frames, bearing rings se-' cured to said end frames, bearing members rigidly secured to said rings, a drum rotatably supported by said end frames independently of said bearing.rings, means for heating the drum, pressing rollers cooperating with said drum and having their ends supported by said members, bearings for supporting said drum, means carried by said members for adjusting the tension of said rollers, and means also carried by said members for locking said rollers in adjusted position.

6. A machine of the character described comprising a rotatable drum, means for heating said drum, a series of rolls at the periphery of said drum for rigidly holding and pressing the paper onto the heated drum surface as the paper is carried around the same, and means for applying material to the surface of the paper as it is carried around the drum.

7. A machine of the character described comprising a rotatable drum, means for heating said drum, means including a series of rolls at the periphery of said drum for pressing the paper onto substantially the entire heated drum surface as the paper is carried around the same, a receptacle for retaining material and a roll in said receptacle communicating with the surface of the paper to deposit said material onto the surface of the paper. r i

8. A machine of the character described comprising a drum, means for heating the drum, means for rotating said drum, a plurality of rolls located around and pressing against the periphery of said drum, means for regulating the roll pressure on the drum whereby When the paper is carried around the drum it is pressed against the surface, and means for applying material to the surface of the paper as it is carried around the drum.

In testimony whereof I affixmy signature in presence of two witnesses.

CHARLES H. CASE.

Witnesses v HOWARD E. BARLow,

E; l[.. OGDEN. 

